babuk | 5339981168dfcefb874dc7e82563fa7aca047f17b1184ae8db9336a2335473a9

Analysis

max time kernel
197s
max time network
224s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
01-12-2022 05:59

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General

Target

exe.ransomware.babuk/02/94/11/0294114D5F411B6C47EB255D4ED6865DF99D1C5252F4F585AABF44E6CBACAA59/02941.exe
Size

79KB
MD5

d3c83232b0e85485724c4029e8b93dc1
SHA1

2cfe3762a2e0c7e9a15bd617e693076f47d84028
SHA256

0294114d5f411b6c47eb255d4ed6865df99d1c5252f4f585aabf44e6cbacaa59
SHA512

07d83a9b09452eab085bec3819a1bd5353e2364c134cf87fe0c1a6770ed447d32cb954c98337ca6121fce2db1dff05a5ea5518239f4bb02ca50dabee02cab490
SSDEEP

1536:2PG6UhZM4hubesrQLOJgY8ZZP8LHD4XWaNH71dLdG1iiFM2iG2zs4:OAhZ5YesrQLOJgY8Zp8LHD4XWaNH71dc

Score

10^/10

babuk ransomware

Malware Config

Extracted

Path

C:\MSOCache\How To Restore Your Files.txt

Ransom Note

----------- [ Hello world! ] -------------> ****BY BABUK LOCKER**** Ignore this for a long time, we will start reporting the hack to mainstream media and posting your data to the dark web. Now that we got your attention, lets make it short... -WHAT HAPPENED? ----------------------------------------------Some bad news... -All the files on your computer/network have been encrypted with SHA-256, ChaCha8 and ECC algorithms-translated, you can't open/decrypt your files on your own. -All your files such as customers info, scans, billing, insurance, passports... are in our hands now and we might decide to sell/make them public if you dont contact us. -Dont forget about GDPR ) ----------------------------------------------Some good news... -Contact us with the information below and you will recover all your data with our universal decryptor and we will permanently delete your info from our servers. WHAT GUARANTEES? ---------------------------------------------- We value our reputation. If we do not do our work and liabilities, nobody will pay us. This is not in our interests. Just google us, we have the decryption keys and we never leaked information of any paying company. All our decryption software is perfectly tested and will decrypt your data. We will also provide support in case of problems. Also information on how all this happened and further information to help you increase your network security, so this won't happen again. How to contact us? Good decision) ---------------------------------------------- -Send us an email: [email protected] [email protected] make sure you check your spam folder for our reply. -qTox for instant support, download TOX (https://tox.chat/download.html): our tox ID: 81B2B719AB9BDDCE9116776FA01956C2D4BB8A7CA5464592593F9A25DA1F91174391480C6DC0 !!! DANGER !!! DO NOT MODIFY or try to RECOVER any files yourself. We WILL NOT be able to RESTORE them. !!! DANGER !!! Customer ID: S01E01AMS-DB7

Emails

[email protected]

URLs

https://tox.chat/download.html

Signatures

Babuk Locker
RaaS first seen in 2021 initially called Vasa Locker.
ransomware babuk
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Modifies extensions of user files 13 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

02941.exe

description	ioc	process
File renamed	C:\Users\Admin\Pictures\ResumeUnregister.tif => C:\Users\Admin\Pictures\ResumeUnregister.tif.babyk	02941.exe
File renamed	C:\Users\Admin\Pictures\UnblockClose.raw => C:\Users\Admin\Pictures\UnblockClose.raw.babyk	02941.exe
File opened for modification	C:\Users\Admin\Pictures\UnblockClose.raw.babyk	02941.exe
File renamed	C:\Users\Admin\Pictures\PublishGrant.tif => C:\Users\Admin\Pictures\PublishGrant.tif.babyk	02941.exe
File opened for modification	C:\Users\Admin\Pictures\PublishGrant.tif.babyk	02941.exe
File opened for modification	C:\Users\Admin\Pictures\HideGroup.tiff.babyk	02941.exe
File opened for modification	C:\Users\Admin\Pictures\ResumeUnregister.tif.babyk	02941.exe
File renamed	C:\Users\Admin\Pictures\SubmitUnpublish.raw => C:\Users\Admin\Pictures\SubmitUnpublish.raw.babyk	02941.exe
File opened for modification	C:\Users\Admin\Pictures\SubmitUnpublish.raw.babyk	02941.exe
File renamed	C:\Users\Admin\Pictures\UnregisterOpen.raw => C:\Users\Admin\Pictures\UnregisterOpen.raw.babyk	02941.exe
File opened for modification	C:\Users\Admin\Pictures\UnregisterOpen.raw.babyk	02941.exe
File opened for modification	C:\Users\Admin\Pictures\HideGroup.tiff	02941.exe
File renamed	C:\Users\Admin\Pictures\HideGroup.tiff => C:\Users\Admin\Pictures\HideGroup.tiff.babyk	02941.exe

Enumerates connected drives 3 TTPs 24 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

02941.exe

description	ioc	process
File opened (read-only)	\??\B:	02941.exe
File opened (read-only)	\??\N:	02941.exe
File opened (read-only)	\??\T:	02941.exe
File opened (read-only)	\??\I:	02941.exe
File opened (read-only)	\??\S:	02941.exe
File opened (read-only)	\??\F:	02941.exe
File opened (read-only)	\??\G:	02941.exe
File opened (read-only)	\??\H:	02941.exe
File opened (read-only)	\??\M:	02941.exe
File opened (read-only)	\??\P:	02941.exe
File opened (read-only)	\??\X:	02941.exe
File opened (read-only)	\??\L:	02941.exe
File opened (read-only)	\??\Z:	02941.exe
File opened (read-only)	\??\Q:	02941.exe
File opened (read-only)	\??\W:	02941.exe
File opened (read-only)	\??\U:	02941.exe
File opened (read-only)	\??\O:	02941.exe
File opened (read-only)	\??\A:	02941.exe
File opened (read-only)	\??\J:	02941.exe
File opened (read-only)	\??\V:	02941.exe
File opened (read-only)	\??\E:	02941.exe
File opened (read-only)	\??\R:	02941.exe
File opened (read-only)	\??\Y:	02941.exe
File opened (read-only)	\??\K:	02941.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Interacts with shadow copies 2 TTPs 2 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Processes:

vssadmin.exevssadmin.exe

pid process

536 vssadmin.exe
1940 vssadmin.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

02941.exe

pid process

1640 02941.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 1572 vssvc.exe
Token: SeRestorePrivilege 1572 vssvc.exe
Token: SeAuditPrivilege 1572 vssvc.exe

pid	process
536	vssadmin.exe
1940	vssadmin.exe

pid	process
1640	02941.exe

description	pid	process
Token: SeBackupPrivilege	1572	vssvc.exe
Token: SeRestorePrivilege	1572	vssvc.exe
Token: SeAuditPrivilege	1572	vssvc.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

02941.execmd.execmd.exe

description	pid	process	target process
PID 1640 wrote to memory of 612	1640	02941.exe	cmd.exe
PID 1640 wrote to memory of 612	1640	02941.exe	cmd.exe
PID 1640 wrote to memory of 612	1640	02941.exe	cmd.exe
PID 1640 wrote to memory of 612	1640	02941.exe	cmd.exe
PID 612 wrote to memory of 536	612	cmd.exe	vssadmin.exe
PID 612 wrote to memory of 536	612	cmd.exe	vssadmin.exe
PID 612 wrote to memory of 536	612	cmd.exe	vssadmin.exe
PID 1640 wrote to memory of 1304	1640	02941.exe	cmd.exe
PID 1640 wrote to memory of 1304	1640	02941.exe	cmd.exe
PID 1640 wrote to memory of 1304	1640	02941.exe	cmd.exe
PID 1640 wrote to memory of 1304	1640	02941.exe	cmd.exe
PID 1304 wrote to memory of 1940	1304	cmd.exe	vssadmin.exe
PID 1304 wrote to memory of 1940	1304	cmd.exe	vssadmin.exe
PID 1304 wrote to memory of 1940	1304	cmd.exe	vssadmin.exe

C:\Users\Admin\AppData\Local\Temp\exe.ransomware.babuk\02\94\11\0294114D5F411B6C47EB255D4ED6865DF99D1C5252F4F585AABF44E6CBACAA59\02941.exe
"C:\Users\Admin\AppData\Local\Temp\exe.ransomware.babuk\02\94\11\0294114D5F411B6C47EB255D4ED6865DF99D1C5252F4F585AABF44E6CBACAA59\02941.exe"
1⤵
- Modifies extensions of user files
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1640
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:612
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:536
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1304
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:1940

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1572

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File Deletion

T1107

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

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Downloads

memory/536-56-0x0000000000000000-mapping.dmp

Download
memory/612-55-0x0000000000000000-mapping.dmp

Download
memory/1304-57-0x0000000000000000-mapping.dmp

Download
memory/1640-54-0x0000000075351000-0x0000000075353000-memory.dmp

Filesize
8KB

Download
memory/1940-58-0x0000000000000000-mapping.dmp

Download